code: def _piecewise_linear_log(x):
      x = x * _gain
      x[x > math.e] = torch.log(x[x > math.e])
      x[x <= math.e] = x[x <= math.e] / math.e
      return x
  
imports: import json
  import math
  from functools import partial
  from typing import List
  import sentencepiece
  import torch
  import torchaudio
  from data_module import LibriSpeechDataModule
  from lightning import Batch
label_desc: Use image node_id 1 for calling a global function with example usage: _piecewise_linear_log(x) and returns: x